If you want to make sure that never happens to you, then you can disable icloud on your iPhone, iPad or Mac if you want. Not disable icloud literally, but disable your iCloud photo stream just to be sure that none of your photos and video go public.

But first, do not forget to save the images manually beforehand because all the images previously saved in the iCloud will be lost automatically.

Steps To Disable iCloud Photostream :

Go to Settings menu on your iPhone or iPad. Then tap on iCloud menu under Settings. For a Mac you’ll find iCloud under the ‘System Preference’ menu.

You will be able to turn off Photostream.

If you’ve got any previously manually shared Photostreams, then you have to delete them separately. In order to do so, go to Photos app on your iOS device or iPhoto on your Mac. Now start deleting the streamed photos.